49=7(15-d)

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Solution for 49=7(15-d) equation: 



49=7(15-d)

We move all terms to the left:

49-(7(15-d))=0

We add all the numbers together, and all the variables

-(7(-1d+15))+49=0



We calculate terms in parentheses: -(7(-1d+15)), so:

7(-1d+15)

We multiply parentheses

-7d+105

Back to the equation:

-(-7d+105)



We get rid of parentheses

7d-105+49=0

We add all the numbers together, and all the variables

7d-56=0

We move all terms containing d to the left, all other terms to the right

7d=56

d=56/7

d=8

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